mulligrubs vs wretchedness

mulligrubs

noun
  • sullenness; sulky behaviour 

  • low spirits, mild depression, the blues 

wretchedness

noun
  • An unhappy state of mental or physical suffering. 

  • A state of prolonged misfortune, privation, or anguish. 

How often have the words mulligrubs and wretchedness occurred in a corpus of books? (source: Google Ngram Viewer )